Input: gameport_driver - drop private pointer

Nobody uses it anymore.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
diff --git a/include/linux/gameport.h b/include/linux/gameport.h
index 632d126..b65a6f4 100644
--- a/include/linux/gameport.h
+++ b/include/linux/gameport.h
@@ -53,8 +53,6 @@
 #define to_gameport_port(d)	container_of(d, struct gameport, dev)
 
 struct gameport_driver {
-
-	void *private;
 	const char *description;
 
 	int (*connect)(struct gameport *, struct gameport_driver *drv);